The second step is cutting the dovetail using a .359 x 60 degree dovetail cutter
It you have a milling machine, it is a small matter to machine a perfect dovetail with a 0.25-inch dovetail cutter
. I cut mine about 0.060-inch deep.
It was a standard 600 dovetail, so I opened it up with a dovetail cutter
on my milling machine.
Asking a dovetail cutter
to plow through a hard slide cutting on a full 180-degree path is begging for an overheated and worn (or broken) cutter, a work-hardened slide and poor cut finish.
I used a dovetail cutter
I purchased from Brownells for this.
A 45-degree dovetail cutter
will do the job, or if you are really handy, a correctly angled machinist file will suffice.
The dovetail on my front sight is not a standard 3/8" so T can't use my normal dovetail cutter
in my milling machine.
I don't have the type of machine or cutter to make the slot look like they do it at the factory, so I simply milled out the 3/8-inch slot to the proper depth and then used a 1/2-inch 45-degree dovetail cutter
for the barrel block.
The next milling cut will be made to remove material to lessen the burden for the dovetail cutter
. Wipe the previously milled area clean of any oil and use the black felt-tip marker to color an area around 5/8 inch back from the shoulder we just created with the 1/2-inch endmill.